/Engine/Source/Runtime/AudioCaptureCore/Public/AudioCaptureDeviceInterface.h
Opens the audio capture stream with the given parameters and using FOnAudioCaptureFunction for callbacks.
bool OpenAudioCaptureStream ( const [FAudioCaptureDeviceParams](API\Runtime\AudioCaptureCore\FAudioCaptureDeviceParams) & InParams, [FOnAudioCaptureFunction](API\Runtime\AudioCaptureCore\FOnAudioCaptureFunction) InOnCapture, uint32 NumFramesDesired )